28 Oct – 3 Nov 2026 · Vietnam · Wednesday to Tuesday, UTC+7

Vietnam weekly air quality

Modelled US AQI · 8 cities · CAMS via Open-Meteo

62.8Weekly mean modelled AQI · Moderate

Mean PM2.5: 16.1 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Vietnam’s official index.

-14 AQI compared with the previous week’s mean of 76.8.

Highest hourly estimate: 155 in Hanoi · 28 Oct, 06:00 GMT+7.

1344 of 1344 city-hours have a modelled AQI. These are estimates for roughly 45 km model grid cells, not monitoring-station measurements. How this report is made

Daily modelled US AQI

Day	Mean AQI	Low–high	Mean PM2.5 (µg/m³)	City-hours
Wed, 28 Oct	70.6Moderate	32–155	18.2	192 / 192
Thu, 29 Oct	69.1Moderate	30–153	19.7	192 / 192
Fri, 30 Oct	60.5Moderate	24–147	13.9	192 / 192
Sat, 31 Oct	60.2Moderate	24–93	15.9	192 / 192
Sun, 1 Nov	62.9Moderate	27–103	16.7	192 / 192
Mon, 2 Nov	61.8Moderate	25–98	15	192 / 192
Tue, 3 Nov	54.3Moderate	21–82	12.9	192 / 192

Hourly means (UTC+7)

Each cell averages the selected cities’ modelled AQI for that hour.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	73	73	72	72	71	71	70	70	69	68	67	67	67	67	67	67	72	76	77	76	72	72	71	69
Thu	68	67	66	67	67	67	68	68	68	69	69	69	69	70	70	70	73	74	74	71	69	69	69	69
Fri	69	68	68	67	66	65	64	63	61	60	60	59	58	58	57	57	57	58	58	57	57	56	56	56
Sat	56	56	57	57	57	58	58	59	60	60	60	60	61	61	62	62	63	64	64	64	63	63	62	62
Sun	61	61	61	61	60	60	60	59	60	60	60	60	61	61	62	63	68	72	73	71	66	63	64	64
Mon	63	64	64	63	63	63	63	64	63	63	63	62	62	61	61	61	62	63	63	62	59	58	58	58
Tue	57	57	57	56	56	55	54	54	53	53	53	53	53	53	53	54	54	54	55	54	53	53	53	53

Cities by modelled US AQI

Sorted by weekly mean. Each city is a single model grid cell near its centre.

City	Mean AQI	Peak AQI	Mean PM2.5 (µg/m³)	Hours
Hanoi	105.6Unhealthy for Sensitive Groups	155	34.7	168 / 168
Ho Chi Minh City	80Moderate	107	24.2	168 / 168
Can Tho	72.2Moderate	98	20.2	168 / 168
Hai Phong	65.7Moderate	136	15.5	168 / 168
Hue	54.8Moderate	84	11.4	168 / 168
Da Nang	51Moderate	79	9.9	168 / 168
Nha Trang	41.9Good	53	7.3	168 / 168
Da Lat	31Good	44	5.3	168 / 168

City-hours by category

Good: 397

Moderate: 870

Unhealthy for Sensitive Groups: 33

Unhealthy: 44

Very Unhealthy: 0

Hazardous: 0

US AQI scale
AQI	Category
0–50	Good
51–100	Moderate
101–150	Unhealthy for Sensitive Groups
151–200	Unhealthy
201–300	Very Unhealthy
301+	Hazardous

How this report is made

Open-Meteo provides hourly estimates from the Copernicus Atmosphere Monitoring Service (CAMS) global model at roughly 45 km resolution. We use the grid cell nearest each city’s centre. Nearby places may share a cell, and local pollution can differ.

The AQI is the provider’s modelled US AQI across pollutants, one value per city per hour. Weekly, daily and hourly means average those values across the selected cities. PM2.5 is a concentration in µg/m³. These figures use a different basis from the measured PM2.5-derived AQI in the Malaysia and Singapore reports.

Days and hours use UTC+7. The report includes past model hours only, never forecasts. The previous-week comparison appears only when at least 90% of that week’s city-hours are available.

For official local readings and advice, visit Centre for Environmental Monitoring. Air-quality data: Open-Meteo and CAMS, licensed under CC BY 4.0. Haze Monitor is independent of these providers and local authorities.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	73	73	72	72	71	71	70	70	69	68	67	67	67	67	67	67	72	76	77	76	72	72	71	69
Thu	68	67	66	67	67	67	68	68	68	69	69	69	69	70	70	70	73	74	74	71	69	69	69	69
Fri	69	68	68	67	66	65	64	63	61	60	60	59	58	58	57	57	57	58	58	57	57	56	56	56
Sat	56	56	57	57	57	58	58	59	60	60	60	60	61	61	62	62	63	64	64	64	63	63	62	62
Sun	61	61	61	61	60	60	60	59	60	60	60	60	61	61	62	63	68	72	73	71	66	63	64	64
Mon	63	64	64	63	63	63	63	64	63	63	63	62	62	61	61	61	62	63	63	62	59	58	58	58
Tue	57	57	57	56	56	55	54	54	53	53	53	53	53	53	53	54	54	54	55	54	53	53	53	53

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	73	73	72	72	71	71	70	70	69	68	67	67	67	67	67	67	72	76	77	76	72	72	71	69
Thu	68	67	66	67	67	67	68	68	68	69	69	69	69	70	70	70	73	74	74	71	69	69	69	69
Fri	69	68	68	67	66	65	64	63	61	60	60	59	58	58	57	57	57	58	58	57	57	56	56	56
Sat	56	56	57	57	57	58	58	59	60	60	60	60	61	61	62	62	63	64	64	64	63	63	62	62
Sun	61	61	61	61	60	60	60	59	60	60	60	60	61	61	62	63	68	72	73	71	66	63	64	64
Mon	63	64	64	63	63	63	63	64	63	63	63	62	62	61	61	61	62	63	63	62	59	58	58	58
Tue	57	57	57	56	56	55	54	54	53	53	53	53	53	53	53	54	54	54	55	54	53	53	53	53

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	73	73	72	72	71	71	70	70	69	68	67	67	67	67	67	67	72	76	77	76	72	72	71	69
Thu	68	67	66	67	67	67	68	68	68	69	69	69	69	70	70	70	73	74	74	71	69	69	69	69
Fri	69	68	68	67	66	65	64	63	61	60	60	59	58	58	57	57	57	58	58	57	57	56	56	56
Sat	56	56	57	57	57	58	58	59	60	60	60	60	61	61	62	62	63	64	64	64	63	63	62	62
Sun	61	61	61	61	60	60	60	59	60	60	60	60	61	61	62	63	68	72	73	71	66	63	64	64
Mon	63	64	64	63	63	63	63	64	63	63	63	62	62	61	61	61	62	63	63	62	59	58	58	58
Tue	57	57	57	56	56	55	54	54	53	53	53	53	53	53	53	54	54	54	55	54	53	53	53	53